Left Atrial Strain for Predicting MACE in NSTEMI
Incremental Prognostic Value of Left Atrial Reservoir Strain Beyond the GRACE 2.0 Score and Conventional Echocardiographic Parameters for Predicting 6-Month MACE in Patients With NSTEMI
研究概览
地位
详细说明
Non-ST-elevation myocardial infarction (NSTEMI) carries significant short- and long-term risk of major adverse cardiovascular events despite advances in management. Current risk stratification relies on clinical scores such as GRACE 2.0 and conventional echocardiographic parameters including left ventricular ejection fraction (LVEF) and left atrial volume index (LAVI). These tools have limitations, as LVEF may remain preserved and LAVI mainly reflects chronic remodeling.
Left atrial (LA) reservoir strain assessed by two-dimensional speckle tracking echocardiography is a sensitive marker of left ventricular filling pressure and diastolic function. Reduced LA reservoir strain has been associated with adverse outcomes after NSTEMI, but data on its incremental prognostic value beyond established risk models remain limited.
This prospective observational study will assess whether LA reservoir strain independently predicts 6-month MACE and improves risk discrimination when added to the GRACE 2.0 score and conventional echocardiographic parameters in patients with NSTEMI.
研究类型
注册 (估计的)
联系人和位置
学习联系方式
- 姓名:Ahmed A Abu Al-Abbass
- 电话号码:0 10 03702766
- 邮箱:ahmed.18313356@med.aun.edu.eg
参与标准
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
取样方法
研究人群
描述
Inclusion Criteria:
- Age > 18 years
- Confirmed diagnosis of NSTEMI according to current ESC/ACC guidelines
- Willingness to provide informed consent and complete 6-month follow-up
- Undergoing coronary angiography or revascularization during the index hospitalization
Exclusion Criteria:
- ST-elevation myocardial infarction (STEMI)
- Atrial fibrillation or other significant arrhythmia at presentation
- Moderate to severe valvular heart disease (especially mitral valve disease)
- Prior cardiac surgery or valve replacement
- Poor echocardiographic image quality precluding reliable strain analysis
- Chronic kidney disease on dialysis
- Known cardiomyopathy (hypertrophic, dilated, or infiltrative)
- Pregnancy
- Refusal to participate
学习计划
研究是如何设计的?
设计细节
研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
6-month major adverse cardiovascular events (MACE)
大体时间:6 months
|
Composite of cardiac death, recurrent myocardial infarction, heart failure hospitalization, or life-threatening arrhythmia occurring within 6 months of admission.
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6 months
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Left atrial reservoir strain
大体时间:Baseline
|
Peak atrial longitudinal strain (PALS) during the reservoir phase measured by two-dimensional speckle tracking echocardiography (EchoPAC software), expressed as percentage (%).
Higher values indicate better left atrial function.
|
Baseline
|
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Change in risk discrimination with addition of LA reservoir strain
大体时间:6 months
|
Change in risk discrimination for 6-month MACE when left atrial reservoir strain is added to the GRACE 2.0 score, left ventricular ejection fraction (LVEF), and left atrial volume index (LAVI), assessed by change in C-statistic, Net Reclassification Improvement (NRI), and Integrated Discrimination Improvement (IDI).
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6 months
|
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Optimal cutoff value of LA reservoir strain
大体时间:6 months
|
Optimal cutoff value of left atrial reservoir strain for predicting 6-month MACE determined by receiver operating characteristic (ROC) curve analysis.
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6 months
|
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Correlation of LA reservoir strain with clinical parameters
大体时间:Baseline
|
Correlation between left atrial reservoir strain (expressed as percentage) and the following parameters: GRACE 2.0 score, peak troponin level (ng/L), left ventricular ejection fraction (%), and E/e' ratio.
Correlation will be assessed using Pearson or Spearman correlation coefficient.
|
Baseline
|
合作者和调查者
调查人员
- 学习椅:Hatem A Helmy, prof、Department of Cardiology, Faculty of Medicine, Assiut University
出版物和有用的链接
一般刊物
- Schuster A, Backhaus SJ, Stiermaier T, Navarra JL, Uhlig J, Rommel KP, Koschalka A, Kowallick JT, Lotz J, Gutberlet M, Bigalke B, Kutty S, Hasenfuss G, Thiele H, Eitel I. Left Atrial Function with MRI Enables Prediction of Cardiovascular Events after Myocardial Infarction: Insights from the AIDA STEMI and TATORT NSTEMI Trials. Radiology. 2019 Nov;293(2):292-302. doi: 10.1148/radiol.2019190559. Epub 2019 Sep 17.
- Iwahashi N, Gohbara M, Kirigaya J, Abe T, Horii M, Hanajima Y, Toya N, Takahashi H, Kimura Y, Minamimoto Y, Okada K, Matsuzawa Y, Hibi K, Kosuge M, Ebina T, Tamura K, Kimura K. Prognostic Significance of the Combination of Left Atrial Reservoir Strain and Global Longitudinal Strain Immediately After Onset of ST-Elevation Acute Myocardial Infarction. Circ J. 2022 Sep 22;86(10):1499-1508. doi: 10.1253/circj.CJ-21-0907. Epub 2022 May 10.
- Leng S, Ge H, He J, Kong L, Yang Y, Yan F, Xiu J, Shan P, Zhao S, Tan RS, Zhao X, Koh AS, Allen JC, Hausenloy DJ, Mintz GS, Zhong L, Pu J. Long-term Prognostic Value of Cardiac MRI Left Atrial Strain in ST-Segment Elevation Myocardial Infarction. Radiology. 2020 Aug;296(2):299-309. doi: 10.1148/radiol.2020200176. Epub 2020 Jun 16.
- Beyls C, Hermida A, Nicolas M, Debrigode R, Vialatte A, Peschanski J, Bunelle C, Fournier A, Jarry G, Landemaine T, Malaquin D, Kubala M, Mahjoub Y, Leborgne L. Left atrial strain analysis and new-onset atrial fibrillation in patients with ST-segment elevation myocardial infarction: A prospective echocardiography study. Arch Cardiovasc Dis. 2024 Apr;117(4):266-274. doi: 10.1016/j.acvd.2024.01.002. Epub 2024 Feb 15.
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